Extra phosban reactor(what media other then phos remover)

[allincuddy]

Hi, just puting the question out there to see different views.
I have a phosban reactor with phosban in it, I have another reactor and want to put a different media in it as it is good for any media, but what would be a good product. Rather be a little overkill and preventative, then wait until I might have a problem. The set-up has all different corals ad very minimal fish (mostly cleaners, rabbit, tang, clown, copperband).
Thanks and any suggestions and advised product will be greatly appreciated.